/Engine/Source/Runtime/Renderer/Public/VT/VirtualTextureFeedbackBuffer.h
Description of how to interpret an RHIBuffer that is being fed to the virtual texture feedback system. For example a buffer may be a simple flat buffer, or a 2D screen-space buffer with rectangles representing multiple player viewports. In the future we may also want to support append style buffers containing buffer size etc.
struct FVirtualTextureFeedbackBufferDesc
FIntPoint
BufferSize
Size of buffer. 1D buffers have Y=1.
int32
NumRects
The number of rectangles to read from the buffer.
FIntRect[MaxRec...
Rects
Rectangles to read from the buffer.
int32
TotalReadSize
Number of buffer elements to actually read (calculated from the Rects).